Bicycle Rear Derailleur with a Damper Assembly
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United States of America Patent
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-
Oct 11, 2016
Grant Date -
Jun 23, 2016
app pub date -
Dec 23, 2014
filing date -
Dec 23, 2013
priority date (Note) -
Granted
status (Latency Note)
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Abstract
A bicycle rear derailleur includes a base member mountable to a bicycle frame. A movable member is movably coupled to the base member. A chain guide assembly is rotatably connected to the movable member for rotation about a rotational axis. A biasing device is configured to bias the chain guide assembly in a first rotational direction relative to the movable member. A damper assembly is disposed between the chain guide assembly and the movable member to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction opposite to the first rotational direction. The damper assembly includes a one-way roller clutch assembly including radially inner and outer clutch members and roller elements acting between the inner and outer clutch members and a friction device including a friction biasing device and friction surfaces axially biased against and in frictional engagement with the one-way roller clutch assembly by the friction biasing device. The friction surfaces are axially offset with reference to the rotational axis relative to the roller elements.
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